diff --git a/include/ChangeLog b/include/ChangeLog
index 030ebfe78..985b1ea3e 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2001-10-07  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* demangle.h (demangler_engine): Const-ify.
+	* libiberty.h (buildargv): Likewise.
+
 2001-10-03  Vassili Karpov  <malc@pulsesoft.com>
 
 	* bfdlink.h (struct bfd_link_info): Add nocopyreloc field.
diff --git a/include/demangle.h b/include/demangle.h
index dc1e1f107..a314a2410 100644
--- a/include/demangle.h
+++ b/include/demangle.h
@@ -1,5 +1,5 @@
 /* Defs for interface to demanglers.
-   Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000
+   Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001
    Free Software Foundation, Inc.
    
    This program is free software; you can redistribute it and/or modify
@@ -94,11 +94,11 @@ extern enum demangling_styles
 /* Provide information about the available demangle styles. This code is
    pulled from gdb into libiberty because it is useful to binutils also.  */
 
-extern struct demangler_engine
+extern const struct demangler_engine
 {
-  const char *demangling_style_name;
-  enum demangling_styles demangling_style;
-  const char *demangling_style_doc;
+  const char *const demangling_style_name;
+  const enum demangling_styles demangling_style;
+  const char *const demangling_style_doc;
 } libiberty_demanglers[];
 
 extern char *
diff --git a/include/libiberty.h b/include/libiberty.h
index 315d3106c..9501365c6 100644
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -51,7 +51,7 @@ extern "C" {
 /* Build an argument vector from a string.  Allocates memory using
    malloc.  Use freeargv to free the vector.  */
 
-extern char **buildargv PARAMS ((char *)) ATTRIBUTE_MALLOC;
+extern char **buildargv PARAMS ((const char *)) ATTRIBUTE_MALLOC;
 
 /* Free a vector returned by buildargv.  */